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Lesson objective: Apply knowledge of partitioning shapes into halves and fourths to solve a real-world problem.

This lesson provides an opportunity for students to apply their knowledge and understanding of partitioning shapes into halves and fourths to a real-life situation. Students are asked to help a student partition her garden in an attempt to plant four different vegetables equally.

Key Concept students will use:

Shapes, like rectangles, can be partitioned into four smaller equal shares, and the whole is described as four of the smaller equal shares.

Skills students will use:

Model and compose shapes (Grade K, Unit 15)

Partition shapes into four equal parts, called fourths

Partition shapes into two equal parts, called halves

Students engage in Mathematical Practice 3 (construct viable arguments) as they construct arguments about their own partitioning, but also distinguish correct reasoning from that which is flawed.